The OC-901 portable pump-suction H₂S gas detector is professionally developed for real-time monitoring of hydrogen sulfide toxic gas leakage in industrial scenarios. Equipped with original imported electrochemical H₂S sensor, the built-in suction pump realizes rapid gas extraction and fast response reading.
It supports single H₂S detection or customized combination detection with oxygen, combustible gas, CO, TVOC and other gases. Adopts 4-in-1 alarm mode including sound, flash light, vibration and human voice reminder, which effectively warns operators once H₂S concentration exceeds the safety threshold.
With Ex ib IIB T3 explosion-proof certification and IP65 dust & water resistance, this detector works stably in damp, dusty and high-risk harsh environments. It is an essential safety device for sewage treatment, chemical factories, pipeline maintenance, mines and landfill operations to prevent H₂S poisoning accidents.

Features:
- Original imported electrochemical H₂S sensor, high detection accuracy and strong anti-interference performance
- Internal pump suction sampling design, fast sampling speed, supporting remote gas collection via sampling tube
- Support customization of 1~4 kinds of gas sensors according to actual detection demands
- 2.4-inch colorful LCD screen, freely switchable Chinese and English operation interface
- Audible + visual + vibration + voice quadruple alarm, alarm volume ≥75dB for noisy working sites
- Equipped with back clip for easy wearing during field patrol inspection
- 4000mAh large-capacity lithium battery, continuous working time reaches more than 10 hours after full charge
- Built-in alarm data storage module, users can check historical H₂S concentration records and over-limit alarm data locally
- IP65 protection grade + Ex ib IIB T3 explosion-proof certificate, safe to use in flammable and toxic working areas
- Complete aluminum alloy protective case for shockproof storage and transportation
Technical Parameter:
| Gas type | H2S, Hydrogen sulfide |
| Sensor Type | Electrochemical sensor |
| Sensor life | 2~3 years |
| Measuring range | 0-10ppm、50ppm、100ppm; or customized |
| Display Information | Gas types, Concentration value, Concentration unit, Time, Battery status, Alarm status, etc. |
| Display | 2.4 inch colorful screen |
| Alarm Storage | With alarm data storage function, can review the data from the detector.. |
| Sampling mode | Pump-suction sampling (Available for connection with external pump) |
| Operating Language | Chinese or English operating menu is able to be changed freely. |
| Alarm Mode | Audible-visual-vibration alarm, sound≥75dB |
| Power Supply | 3.7V, 4000mAh rechargeable lithium battery, continuous working period over 10 hours. |
| Explosion-proof Grade | Ex ib IIB T3 |
| Protection Grade | IP65 |
| Working Environment | Working Temperature: -20℃~50℃
Working Humidity: 0-95%RH (non-condensing) |
| Body Material | ABS and PC |
| Package | Aluminum alloy box |
| Dimensions | 190*75*47mm |
| Weight | 376g (with charger) |
| Warranty | 1 years |
Remark: If you need gas or measuring range not listed on the above, pls send us your details requirements for further discussion.
Applications:
- Auto workshop: Car fuel pipeline, air conditioning refrigerant, exhaust smoke leak detection
- Petrochemical factory: Oil tank, pipeline, sewage pool, confined space gas safety monitoring
- Refinery, gas station, landfill, sewage plant daily gas inspection
- Hazardous chemical storage room, tunnel underground pipeline gas leakage patrol
Company profile
We Henan Oceanus is located in Henan, a land with a long history and profound cultural heritage, has been dedicated to the research, development, production, and sales of Gas detection system and Environment equipment since its establishment. With exquisite technology and outstanding quality, we have won widespread recognition in the global marketing.

01. Business areas
As a leader in the field of Gas detector and Air quality monitor system, we Henan Oceanus will be continued to expand its business scope and provide customers around the world with customizable Air quality monitor system of various types and specifications.
02. Values and ideas
Our company upholds the core values of integrity and quality service, focusing more on friendship with our customers. We always adhere to integrity management, customer-centered, and provide a full range of pre-sales, sales, and after-sales services to ensure that customers can be worry-free when using our products.
03. Global Service Network
We have a comprehensive global service network, offering timely, professional pre-sales consultation, after-sales service, and technical support for overseas users. Regardless of where users are located, they can enjoy our attentive and thoughtful service.
04. Customer Service
With excellent products and services, Henan Oceanus Gas detector and Air quality monitor system have been exported to more than 100 countries around the world and have won widespread praise.

We Henan Oceanus Company is located in Henan province, a land with a long history and profound cultural heritage, has been dedicated to the research, development, production, and sales of gas detectors since its establishment. With exquisite technology and outstanding quality, we have won widespread recognition in the global market.
Our After-sales service:
1. OEM service for LOGO, model, Technical Parameters, Operation manual, etc.
2. Free calibration service and provide calibration methods.
3. One year warranty and lifetime warranty.
Our address:
No. 2206, Wenhua Chanye Building Block B, No. 77, Shangding Road, Zhengzhou Area, Henan Pilot Free Trade Zone
Email: info@china-oceanus.com
Telephone: +86 0371 60998169
Mobile/Whatsapp: +86 15981942832
Mobile/Whatsapp: +86 13673683950





